Primatte Keyer

This plug-in, from Red Giant Software, is a simple and easy-to-use keyer with plenty of additional control when needed. The sample image they provide to test it with shows that it handles transparency and spill quite well with little fuss.

Note: A demo copy of the Primatte Keyer plug-in is available on the companion DVD.

I used one of Red Giant's provided sample blue-screen images of a fountain with water pouring over a statue's head (Figure 9.23) This is usually a pretty tricky combination for the less-sophisticated keying plug-ins, but Primatte appeared to handle it with a broad sampling of the blue-screen background.

To get rid of the slight blue spill in the water edges, I selected the Spill Sponge and click-dragged over the area with the spill (Figure 9.24). It amazingly removed just the blue and not the subtleties of the water flow and highlights.

Figure 9.23 Primatte allows you to click-drag the selection to get its full range of color sampling.
Figure 9.24 Using the Spill Sponge, I removed the blue cast from the flowing water.

Changing the view to Matte, I then cleaned up the matte by click-dragging the Matte Sponge along the light gray areas inside the white part of the matte (Figure 9.25). This helped the plug-in to distinguish the opaque areas of the matte from those that should be transparent.

Figure 9.25 The Matte Sponge cleaned up and removed areas of the matte that needed to remain opaque.

Figure 9.25 The Matte Sponge cleaned up and removed areas of the matte that needed to remain opaque.

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